Tipping crucible for basalt furnaces



Patented duly l?, i923.V

narra stares PAUL DH, OF PARIS, FRANCE.

TIPPING CRUCIBLE FOR BASALT FURNACES.

Application filed January 26, 1922. Serial No. 531,923.

To @ZZ w wm. t may con cem Be it known that I, PAUL DH, a citizen of the'Republic of F rance,and residing at Paris, Seine Department, No. 12aRue de Provence, in the Republic of France, engineer, have inventedcertain new and useful Tipping Crucibles for Basalt Furnaces, of whichthe following is a specification.

This invention relates to a tipping crucible adapted for use withfurnaces for the fusion -of basalt, By reason of the rapidity with whichbasalt in fusion becomes thickened and solidified when it is spread outin a thin layer, it becomes necessary to carry out the filling of themoulds in a rapid manner and as far as possible by a single movement.The crucible according to this invention will accomplish this purposeeven when the furnace will only permit the melted basalt to How out at aslow rate. F or this purpose the said crucible is so disposed as tocontinually receive the basalt which is delivered from the tap hole ofthe furnace into a basin closed by a vault and heated in the inte-riorby burners disposed in the walls and supplied with fuel gas. The saidcrucible is mounted on a horizontal axle in such manner as to besuitably overturned and to pour out the desired portion of the meltedcontents into the ingot moulds or like moulds by a rapid operation.

The accompanying drawings show by way of example a form of constructionof a tip-` ping crucible according to this invention, wherein:

Fig. l is a vertical section of the same, 'and Fig. 2 a horizontalsection on the line A-A Fig. l.

l indicates the wall of the furnace and 2 a tap hole provided in anupper part eX- tending above t-he said crucible. The latter is supportedupon a stationary axle 3; the upper part thereof 4 and the adjacentportion of the furnace have the form of portions of surfaces ofrevolution concentric with the aXle 3 whereby the said crucible isenabled to swing about but without per- Init-ting any admission of airthrough the tap hole 2. Within the crucible is formed a. circular basinhaving above the saine a vault constituting a reverberatory portion; thebasalt is fed into the same through a funnel-shaped opening 5 which isof sufficient size to maintain a constant communication with the taphole 2 in spite of the swinging movement of the crucible, and the basaltwill flow out through a'lateral tap hole 6 when the crucible is tippedto alsufficient degree. yOpposite the tap holey 6 is provided a sighthole 7 whichmay if necessaryl be closed by a plug. l

In the walls of the crucible are provided a plurality of passages 8 and9 which are in alternate disposition around the circumference of thebasin; the passages 8 are used to receive the burners having gas or afuel mixture supplied thereto by means of flexible piping, the passage 9being used for the secondary air supply. All of the said passages openin a substantially tangential position with reference to the wall of thebasin in order to give rise to a. whirling motion providing for theperfect combustion of the gas and the uniform heating of all parts ofthe crucible.

The products of combustion are discharged through the apertures 5 and 2and are thence evacuated into the furnace whence they are drawn up bythe chimney. They will aid in heating the walls of the tap hole 2thereby obviating all clogging of the latter.

The portions of the crucible which are eX- posed to contact with thebasalt or the flames are constructed of refractory Inaterial in one ortwo interchangeable parts. The remainder may be constituted by asuitable non-conducting substance maintained within a metal casing 10which is secured in any suitable manner to a supporting frame 11connected with the axle 3. To handle the crucible in a suitable manner,the weight of the same together with the contents may be balanced bycounterweights, springs or like means. and the operating devices can becontrolled by a hand lever or crank and may comprise if necessarysuitable gearing including worm gearing or the like.

Claims:

1. A crucible for receiving basalt when discharged from a meltingfurnace and for pouring the same into ingot or like moulds. comprising astationary horizontal axle whereupon the crucible may be given aswinging movement. a basin formed within the crucible, a vaultconstituting a reverberatory dome situated above the said basin, aplurality of burners disposed at the per`15jv p of portions of surfacesof revolution 'concentric with the ,said pivotation axle,

riphery and opening into the said basin, the Sad burners.. beingSubstantially tangent to the, circumference of the basin.l

2.` A 4Crucible for receiving basalt when discharged from a meltingfurnace and for pouring the same into ingot-,or like moulds, comprisinga stationary horizontal axle whereupon the said Crucible is mounted insuch manner as to provide for the swinging movement thereof for therapid pouring of v.thecontents, the Crucible being situated under'lja`pn'tion of 'the furnace in corbel disposition having the tap holeformed therein,

the adjacent surfaces ofthe said corbel portion and the top. ofthecrucible having the 3. Crucible `for'K'receiving*basalt when dischargedfrom melting furnace and for pouring the same into ingot or like moulds,comprising a stationary horizontal axle whereupon the said Crucible ismounted in such manner as to provide for the rapid pouring ,of thecontents, the Crucible being situated under a portion of the furnace incorbel disposition having the tap hole y formed therein, ayfunnel-shaped aperture ybeing formed in the top of the Crucible in suchmanner as `to maintain constant com inunication with the tap hole of thevfurnace during the swinging movements of the crucible. y

In testimony thatI claim the foregoing as my invention, I have signed myname.

PAUL DH.

